<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Hide Rule structure</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" href="../style/style.css" type="text/css" />
</head>

<body>
<h1>HideRule</h1>
<p>Defines a visibility rule for a report item in a kind of output format.</p>

<h3>Description</h3>
<p>The visibility rule says when a report item should be hidden. It can be hidden based 
on the output type, an expression, or both. For example, the browser control is normally 
hidden in all output formats except HTML. A past-due item might be hidden if the account 
is not past due.</p>

<p>An item can be completely hidden (hidden in all formats), or hidden only in selected 
formats. An item hidden in all formats is never actually created in the Factory. An item
hidden in selected formats is created, but will be omitted when rendered to the format 
for which it is hidden.</p>

<h2 class="property">format</h2>
<p>Identifies the format in which the element should be hidden.</p>

<h3>Description</h3>
<p>This property identifies the output format in which to hide the element. The element can be 
hidden in all output formats (using the "All" choice), or in a specific format. If the element 
is hidden in all formats, then it is not created in the Factory. Otherwise, is created, but is 
removed before rendering in the Presentation engine when converted to the target output format.</p>

<h2 class="property">valueExpr</h2>
<p>A boolean expression that determines whether to hide the element or not.</p>

<h3>Description</h3>
<p>The boolean expression to evaluate. If the expression evaluates to <code>true</code>, then the element is
hidden; Otherwise, the element is not hidden. Default to <code>true</code> if no expression is given.</p>

</body>
</html>
